Medical device with coupling member
Medical devices and methods for making and using medical devices are disclosed. An example system for delivering an implantable medical device includes an outer shaft and an inner catheter, each having a proximal end, a distal portion and a lumen extending therein, wherein the inner catheter extends within a portion of the outer shaft lumen. The system also includes an actuation shaft extending within a portion of the inner catheter lumen, wherein a distal end of the actuation shaft is coupled to the implantable medical device. The system also includes a guidewire shaft extending within a portion of the inner catheter lumen and a coupling component including a distal end region, a proximal end region and a length, wherein the actuation shaft and the guidewire shaft are coupled to the coupling component such that actuation of the coupling component translates the actuation shaft and the tubular guidewire shaft simultaneously.
1. A system for delivering an implantable medical device, comprising:
an outer shaft having a proximal end, a distal portion and a lumen extending therein;
an inner catheter having a proximal end, a distal portion and a lumen extending therein, wherein the inner catheter extends within at least a portion of the lumen of the outer shaft;
an actuation shaft extending within a portion of the lumen of the inner catheter, wherein a distal end of the actuation shaft is coupled to the implantable medical device;
a tubular guidewire shaft extending within a portion of the lumen of the inner catheter, the tubular guidewire shaft including a central longitudinal axis; and
a coupling component including a distal end region, a proximal end region and a length extending therebetween,
wherein the tubular guidewire shaft extends along the length of the coupling component,
wherein the tubular guidewire shaft is coupled to the proximal end region of the coupling component,
wherein the proximal end region of the coupling component is free of the actuation shaft,
wherein the distal end region of the coupling component is configured to position an axis of the tubular guidewire shaft radially offset with respect to a central longitudinal axis of the coupling component;
wherein the actuation shaft and the tubular guidewire shaft are coupled to the distal end region of the coupling component, such that actuation of the coupling component translates the actuation shaft and the tubular guidewire shaft simultaneously;
wherein the proximal end region of the coupling component is configured to position the central longitudinal axis of the tubular guidewire shaft coaxial with the central longitudinal axis of the coupling component.
2. The system of claim 1 , wherein the coupling component includes a centering lumen extending along at least a portion of the length of the coupling component, and wherein the centering lumen is configured to shift the tubular guidewire shaft from the radially offset configuration to a coaxial configuration.
3. The system of claim 1 , wherein the tubular guidewire shaft includes a projection, and wherein the proximal end region of the coupling component includes an aperture, and wherein the projection is configured to extend at least partially within the aperture.
4. The system of claim 3 , further comprising an actuation sleeve having a distal end region and a lumen extending therein, and wherein the distal end region of the actuation sleeve is configured to engage with the proximal end region of the coupling component.
5. The system of claim 4 , wherein the actuation sleeve is configured to prevent the projection from separating from the aperture.
6. The system of claim 1 , wherein the proximal end region of the coupling component includes a collet.
7. The system of claim 6 , wherein the collet includes a plurality of fingers arranged circumferentially around a longitudinal axis of the coupling component, and wherein the plurality of fingers is configured to squeeze onto an outer surface of the tubular guidewire shaft.
8. A system for implanting a heart valve, comprising:
a handle;
a deployment shaft having a proximal end coupled to the handle, a distal portion and a lumen extending therein;
an inner shaft extending within at least a portion of the lumen of the deployment shaft, the inner shaft having a lumen extending therein; and
a translation assembly coupled to the handle, the translation assembly including an actuation shaft, a tubular guidewire shaft and a coupling component,
wherein the tubular guidewire shaft extends along a length of the coupling component,
wherein the tubular guidewire shaft is coupled to the proximal end region of the coupling component,
wherein the proximal end region of the coupling component is free of the actuation shaft,
wherein the distal end region of the coupling component is configured to position an axis of the tubular guidewire shaft radially offset with respect to a central longitudinal axis of the coupling component;
wherein the actuation shaft and the tubular guidewire shaft are coupled to a distal end region of the coupling component;
wherein the coupling component is disposed within the handle;
wherein the handle is configured to permit simultaneous translation of the actuation shaft and the tubular guidewire shaft;
wherein the proximal end region of the coupling component is configured to position a central longitudinal axis of the tubular guidewire shaft coaxial with the central longitudinal axis of the coupling component.
9. The system of claim 8 , wherein a portion of the actuation shaft and the tubular guidewire shaft extend within the lumen of the inner shaft.